This brings back memories of similar collegiate petty scams. There was a year where I was working evenings and commuting to college during the day in my barely

This brings back memories of similar collegiate petty scams. There was a year where I was working evenings and commuting to college during the day in my barely-running Cavalier. Money was not abundant. Thankfully, even though the distant parking lots charged us commuters quite a bit for day passes, they used a system with "hang tags" that you put on your mirror. Each tag had a row of 12 "bubbles" and another grid of 31 "bubbles" covered with the silvered scratch-off stuff you find on lottery scratch tickets. To use one of these daily tags you would scratch off the bubble corresponding to the month and date you were parking. I soon realized that the parking attendants weren't very observant and between that and the windshield, you could use one of those silver paint pens to "refill" in the bubbles after they had been scratched, use a fine-tipped Sharpie to draw the number back on the re-silvered bubble, and scratch off the next day. Can't remember how long I did this and I seem to remember eventually getting a ticket but it was right around when my car finally died and the year was almost over. Either way, I could usually get a week or so out of those daily passes before a stray mark or penmanship error would ruin a tag and I'd have to start a new one. I'm pretty sure I got at least $50-100 worth of parking out of my little scam though. Not proud but hey...I managed to graduate and not starve so, bonus!